The use of vegetable oils for engine fuels may seem insignificant today, but such oils may become, in the course of time, as important as petroleum and the coal-tar products of the present time.
植物油作为发动机燃料的使用在今天看来可能微不足道，但这些油或许会随着时间的推移变得像石油和煤焦油产品一样重要。
所有人都是我们的导师，恶人通过他们的恶行说'不要靠近我'。善人总是善良的，所以所有人都像导师一样对我们。
I invent nothing, I rediscover.
An ounce of practice is worth more than tons of preaching.
"In der Literatur geht es nicht darum, Antworten zu geben, sondern Fragen zu stellen."